CN211930401U

CN211930401U - Shaft sleeve for noise reduction of shaded pole motor

Info

Publication number: CN211930401U
Application number: CN202020886378.7U
Authority: CN
Inventors: 俞江辉; 贺怀元
Original assignee: Cixi Maside Electric Machinery Co ltd
Current assignee: Cixi Maside Electric Machinery Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-11-13
Anticipated expiration: 2030-05-22

Abstract

The utility model discloses an axle sleeve that is used for shaded pole motor to fall and makes an uproar, include the iron core that constitutes by a plurality of rotor punching stack, a motor shaft is worn to be equipped with at the iron core center, the axle sleeve cover is located in the pivot, the inner wall of axle sleeve is equipped with a plurality of lug, the lug has the trend along axle sleeve assembly direction elastic deformation, just the pivot is held tightly so that axle sleeve and pivot rotate in step to the lug. Set up a plurality of lug on the inner wall of axle sleeve, the lug produces elastic deformation with the extrusion of pivot outer wall, and simultaneously, the elastic potential energy of lug orders about the lug and resets and warp, so that the lug holds the pivot tightly, make and keep interference fit between lug and the pivot, thereby the compensation is after long-term work and use, the clearance that produces between axle sleeve and the pivot, guarantee the stable cooperation between axle sleeve and the pivot, make axle sleeve and pivot synchronous rotation, avoid the drunkenness of axle sleeve production in the cover utmost point motor course of operation in the pivot, thereby noise abatement.

Description

Shaft sleeve for noise reduction of shaded pole motor

Technical Field

The utility model relates to the technical field of electric machines, concretely relates to an axle sleeve that is used for shaded pole motor to fall and makes an uproar.

Background

The shaded pole motor is widely used in household appliances with fan structures, such as microwave ovens, air conditioners, refrigerators and electric fans, so that the problem of noise generated when the shaded pole motor works is greatly emphasized, the noise of the shaded pole motor is mainly generated on a rotor rotating shaft, two shaft sleeves are usually sleeved at two ends of the rotating shaft respectively, and after long-term work and use, a gap or loose fit exists between the shaft sleeves and the rotating shaft, so that the shaft sleeves generate axial and radial play in the rotating process of the rotating shaft, and noise is caused.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a shaft sleeve that is used for shaded pole motor to fall and makes an uproar to reduce the noise that produces in the shaded pole motor working process.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a shaft sleeve for making an uproar falls in shaded pole motor, includes the iron core that constitutes by a plurality of rotor punching stack, a motor shaft is worn to be equipped with at the iron core center, the axle sleeve cover is located in the pivot, the inner wall of axle sleeve is equipped with a plurality of lug, the lug has the trend along axle sleeve assembly direction elastic deformation, just the lug is held the pivot tightly so that axle sleeve and pivot rotate in step.

Compared with the prior art, the utility model has the advantages of it is following and beneficial effect: set up a plurality of lug on the inner wall of axle sleeve, the lug produces elastic deformation with the extrusion of pivot outer wall, and simultaneously, the elastic potential energy of lug orders about the lug and resets and warp, so that the lug holds the pivot tightly, make and keep interference fit between lug and the pivot, thereby the compensation is after long-term work and use, the clearance that produces between axle sleeve and the pivot, guarantee the stable cooperation between axle sleeve and the pivot, make axle sleeve and pivot synchronous rotation, avoid the drunkenness of axle sleeve production in the cover utmost point motor course of operation in the pivot, thereby noise abatement.

Further, the convex block is provided with a large end which is gradually gathered along the assembling direction of the shaft sleeve to form a small end. Through the improvement, the holding force between the convex block and the rotating shaft is gradually increased to the large end along the small end, and the shaft sleeve is convenient to assemble.

Further, the lug is pyramid-shaped and provided with at least one side edge used for being in pressing contact with the rotating shaft. Through the improvement, the rotating shaft is firstly matched with the side edge of the bump, and after the bump is elastically deformed, the rotating shaft is tightly matched with the wall surface of the bump.

Further, the small end is closed to be in a sharp angle shape.

Furthermore, the inner diameter formed by enclosing the small ends of the plurality of lugs is smaller than the maximum outer diameter of the rotating shaft. Through the improvement, the interference fit of the shaft sleeve and the rotating shaft is ensured.

Furthermore, a plurality of the convex blocks are uniformly arranged around the axis of the shaft sleeve, so that the structure is more compact.

Further, the number of the bumps is at least 6.

And furthermore, the iron core sleeve further comprises a gasket, and two ends of the gasket are respectively abutted against the end parts of the iron core and the shaft sleeve.

Further, the one end that the iron core was kept away from to the axle sleeve is equipped with a shaft shoulder, the lug is located the one end that is close to or keeps away from the iron core on the axle sleeve, and through above improvement, the axle sleeve passes through the gasket and the shaft shoulder offsets between rotor and bearing for overall structure is compacter.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

FIG. 3 is a schematic view of the shaft sleeve structure of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

in the figure: 1. rotor punching sheets; 2. an iron core; 3. a rotating shaft; 4. a shaft sleeve; 5. a bump; 5.1, big end; 5.2, a small end; 5.3, side edges; 5.4, a shaft shoulder; 6. a gasket;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding, and are not used to define any direction or order of limitation.

As shown in fig. 1-4, a shaft sleeve for noise reduction of a shaded pole motor comprises an iron core 2 formed by stacking a plurality of rotor punching sheets 1, a motor rotating shaft 3 penetrates through the center of the iron core 2, the shaft sleeve 4 is sleeved on the rotating shaft 3, a plurality of bumps 5 are arranged on the inner wall of the shaft sleeve 4, the bumps 5 have a tendency of elastic deformation along the assembly direction of the shaft sleeve 4, and the bumps 5 tightly hold the rotating shaft 3 so that the shaft sleeve 4 and the rotating shaft 3 synchronously rotate.

Set up a plurality of lug 5 on the inner wall of axle sleeve 4, lug 5 produces elastic deformation with 3 outer wall extrusions of pivot, and simultaneously, lug 5's elastic potential energy orders about lug 5 and restores to the throne and warp, so that lug 5 holds pivot 3 tightly, make and keep interference fit between lug 5 and the pivot 3, thereby the compensation is after long-term work and use, the clearance that produces between axle sleeve 4 and the pivot 3, guarantee the stable cooperation between axle sleeve 4 and the pivot 3, make

axle sleeve

4 and 3 synchronous rotations of pivot, avoid the drunkenness that axle sleeve 4 produced on pivot 3 in cover utmost point motor course of operation, thereby the noise abatement.

Specifically, the bump 5 is provided with a big end 5.1, the big end 5.1 is gradually folded along the assembly direction of the shaft sleeve 4 to form a small end 5.2, the holding strength between the bump 5 and the rotating shaft 3 is gradually increased to the big end 5.1 along the small end 5.2, and the shaft sleeve 4 is convenient to assemble.

Specifically, the bump 5 is pyramid-shaped, the bump 5 has at least one side edge 5.3 for being in pressing contact with the rotating shaft 3, the rotating shaft 3 is firstly matched with the side edge 5.3 of the bump 5, and after the bump 5 is elastically deformed, the rotating shaft 3 is tightly matched with the wall surface of the bump 5.

In this embodiment, the side edge 5.3 of the bump 5 may be a strip, and the large end 5.1 of the bump 5 is gathered along the side edge 5.3 and is gathered to be in a sharp angle shape at the end of the small end 5.2.

In another embodiment, the side edges 5.3 of the protrusion 5 may be multiple, and the multiple side edges 5.3 are longitudinally arranged and circumferentially arranged around the axis of the shaft sleeve 4, so as to form a contact surface abutted against the rotating shaft 3, and the contact surface may be a plane or an arc surface attached to the wall surface of the rotating shaft 3.

Specifically, the inner diameter formed by enclosing the small ends 5.2 of the plurality of lugs 5 is smaller than the maximum outer diameter of the rotating shaft 3, so that the interference fit between the shaft sleeve 4 and the rotating shaft 3 is ensured.

Specifically, a plurality of bumps 5 are uniformly arranged around the axis of the shaft sleeve 4, so that the structure is more compact.

Specifically, the number of the bumps 5 is 6.

Specifically, the iron core comprises a gasket 6, and two ends of the gasket 6 are respectively abutted against the end parts of the iron core 2 and the shaft sleeve 4.

Specifically, the one end that iron core 2 was kept away from to axle sleeve 4 is equipped with a shaft shoulder 5.4, and lug 5 locates the one end that is close to or keeps away from iron core 2 on the axle sleeve 4, and axle sleeve 4 offsets between rotor and bearing through gasket 6 and shaft shoulder 5.4 for overall structure is compacter.

During assembly, the small end 5.2 of the lug 5 is firstly matched with the rotating shaft 3, and the large end 5.1 is gradually matched with the rotating shaft 3 along the axial direction, at the moment, the lug 5 is extruded to generate elastic deformation, and the elastic potential energy of the lug 5 drives the lug 5 to reset and deform so that the lug 5 tightly holds the rotating shaft 3.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a shaft sleeve for making an uproar falls in shaded pole motor, includes iron core (2) that constitute by a plurality of rotor punching (1) superposes, a motor shaft (3), its characterized in that are worn to be equipped with in iron core (2) center: the utility model discloses a shaft sleeve, including pivot (3), axle sleeve (4), lug (5) are equipped with a plurality of lug (5), lug (5) have along axle sleeve (4) assembly direction elastic deformation's trend, just pivot (3) are held tightly in lug (5) so that axle sleeve (4) and pivot (3) synchronous rotation.

2. The bushing for noise reduction of shaded pole motors of claim 1, wherein: the projection (5) is provided with a large end (5.1), and the large end (5.1) is gradually gathered along the assembling direction of the shaft sleeve (4) and forms a small end (5.2).

3. The bushing for noise reduction of shaded pole motors of claim 2, wherein: the projection (5) is pyramid-shaped, and the projection (5) has at least one side edge (5.3) for pressing contact with the rotating shaft (3).

4. The bushing for noise reduction of shaded pole motors of claim 2, wherein: the small end (5.2) is folded to be in a sharp angle shape.

5. The bushing for noise reduction of shaded pole motors of claim 2, wherein: the inner diameter formed by enclosing the small ends (5.2) of the plurality of lugs (5) is smaller than the maximum outer diameter of the rotating shaft (3).

6. The bushing for noise reduction of shaded pole motors of claim 1, wherein: the plurality of lugs (5) are uniformly arranged around the axis of the shaft sleeve (4).

7. The bushing for noise reduction of shaded pole motors of claim 1, wherein: the number of the projections (5) is at least 6.

8. The bushing for noise reduction of shaded pole motors of claim 1, wherein: the iron core is characterized by further comprising a gasket (6), wherein two ends of the gasket (6) are respectively abutted against the end parts of the iron core (2) and the shaft sleeve (4).

9. The bushing for noise reduction of shaded pole motors of claim 1, wherein: one end, far away from iron core (2), of shaft sleeve (4) is equipped with a shaft shoulder (5.4), lug (5) are located the one end that is close to or keeps away from iron core (2) on shaft sleeve (4).